The Saint Louis Billikens mascot on the court during a game against the Louisville Cardinals during the third round of the 2014 NCAA Tournament at Amway Center.

(Kim Klement/ USA TODAY Sports/ March 22, 2014)

In addition to electronic-media timeouts, each team gets four 30-second timeouts and one 60-second timeout

Wisconsin Badgers coach Bo Ryan talks to his team in a timeout during a game against the Michigan State Spartans in the semifinals of the Big Ten college basketball tournament at Bankers Life Fieldhouse.

(Brian Spurlock/ USA TODAY Sports/ March 15, 2014)

What's with the leggings?

Louisville Cardinals guard Russ Smith, center, dons a pair of leggings while playing against the Saint Louis Billikens.

Over the past couple of weeks, you've been asking all kinds of questions related to the NCAA men's basketball tournament. You've been asking about Duke and Ducks, fouls and Flyers, tiebreakers and tights.

Most of all, you've been asking about brackets.

Google posted a report Thursday to show marketers trends in team-apparel searches, mobile searches — which showed a spike last Friday during the tournament's TV-intensive second round — and, of course, bracket-information searches.

Given the upsets in this year's tournament (Stupid Mercer! Stupid Duke!), our bracket is busted, too. So we, like you, won't be getting a billion from Buffett. Instead we dug in for answers to some of the top NCAA Tournament questions, as of Thursday, on Google Trends. For more answers to top Google Trends questions, see our photo gallery.

What teams are left in the NCAA Basketball Tournament?

These are the Sweet 16®, roughly in order of the innovation or cuteness of their mascots: Stanford, Kentucky, UCLA, South Dakota State, Connecticut, Florida (the tournament favorite), Iowa State, Baylor, Arizona, Louisville, Wisconsin, Michigan, Tennessee, Virginia, Michigan State, Dayton.

NCAA Sweet 16 and NCAA Sweet Sixteen, by the way, are among 75 trademarks that the NCAA lists on its Web site. The site also shares its NCAA Trademark Protection Program, which as of Thursday didn't carry a trademark.

When was the last time Duke lost in first round of NCAA?

2012, when Duke lost 75-70 to Lehigh. The NCAA referred to it as the Second Round (no trademark to date), but it was both teams' first game in that tournament. And if you'd like to get confirmation that Duke lost the most recent game it played — 78-71 to heavy underdog Mercer in its first game of this year's tournament last week — check diddukewin.com.

How many NCAA brackets are still perfect?

Take heart. Apparently none. Not this year, not last year, not ever. Buffalo Grove’s Brad Binder made an impressive run this year, picking the first 36 tournament games correctly in the Yahoo Sports Tourney Pick’em before Dayton upset Syracuse last weekend.

Also, the Billion Dollar Bracket Challenge — a venture this year of billionaire Warren Buffett and Quicken Loans that promised $1 billion to anybody who could pick all NCAA Tournament gets correctly — will have no grand-prize winner, either, since reportedly no entrants have survived this far.

According to a Slate article: “If all 317 million people in the U.S. filled out a bracket at random, you could run the contest for 290 million years, and there'd still be a 99 percent chance that no one had ever won.”

The article quoted Jeff Bergen, a math professor at DePaul University, as putting the odds are more like 1 in 128 billion for those who know the sport pretty well.

"To give this a try, sit down and start flipping a coin," Bergen told Blue Sky in an email response to a question. "See how many correct guesses you can make. Filling out a perfect bracket is the same as guessing the flip correctly 63 times in a row. Trust me, you'll never come close to 63 in a row. You will be lucky if you get 10 in a row. It would be almost a miracle to get 25 in a row."

What is the mascot of the St. Louis Billikens?

The Billikens got billikened from the tournament last weekend, losing 66-51 to Louisville.

For those still interested, we quote an article on St. Louis University's Web site: "The history of Saint Louis University's mascot — and how it became affiliated with SLU — remains debatable to this day. Several details seem to be certain. Everyone agrees that the Billiken is a good-luck figure who represents 'things as they ought to be.' The designer of the Billiken also seems to be fact. Florence Pretz, a Missouri art teacher and illustrator, patented her 'design for an image' of the jovial creature in 1908."

Why do basketball players wear leggings?

Reports cite the reasons that basketball players wear leggings (also called tights or compression pants) as everything from warmer muscles to increased blood flow to high court fashion.